Parallelogram is a quadrilateral with opposite sides both parallel and equal in length - commonly known as a rectangle.
A Scalene triangle has no sides of equal length.
A parallelogram is a shape with opposite sides equal in length and parallel to each other. Examples of parallelograms are: rhombus, square, rectangle, and rhomboid.
The name of the shape is a quadrilateral.
The answer is irregular * * * * * That is not true. A rhombus is irregular but does have equal sides. Any shape with equal sides - other than an equilateral triangle - can be distorted so that its angles are not equal. That is enough to make it irregular, even though the sides remain of the same length. There is no specific name for such shapes.
It is usually a regular polygon that has equal sides.
An isosceles triangle has exactly two sides that are equal in length.
Square. By definition, its sides must all be equal.